
.addBtn{
    position:absolute;
    bottom:5rem;
}
* {
    margin: 0;
    padding: 0;
    -webkit-appearance: none; //去掉浏览器默认样式
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-touch-callout: none;
    box-sizing: border-box;
}

html,
body {
    margin: 0 auto;
    width: 100%;
    min-height: 100%;
    overflow-x: hidden;
    -webkit-user-select: none;
}

body {
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    -webkit-text-size-adjust: 100%; //关闭自动调整字体
-webkit-overflow-scrolling: touch;
    overflow-scrolling: touch;
}

#demo1,#value {
    width: 100%;
    height: 2.25rem;
    font-size: 1rem;

}

